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  1. Book ; Online ; E-Book: Nonclassical ion channels in the nervous system

    Tian-le, Xu / Wu, Long-Jun

    (Methods in signal transduction series)

    2021  

    Abstract: Intro -- Half Title -- Series Page -- Title Page -- Copyright Page -- Contents -- Preface -- Editors -- Contributors -- 1. Endogenous Activation and Neurophysiological Functions of Acid-Sensing Ion Channels -- 1.1 Introduction -- 1.2 Endogenous ... ...

    Author's details edited by Tian-le Xu and Long-Jun Wu
    Series title Methods in signal transduction series
    Abstract Intro -- Half Title -- Series Page -- Title Page -- Copyright Page -- Contents -- Preface -- Editors -- Contributors -- 1. Endogenous Activation and Neurophysiological Functions of Acid-Sensing Ion Channels -- 1.1 Introduction -- 1.2 Endogenous Conditions That May Activate ASICs -- 1.2.1 Metabolic Production of Protons -- 1.2.1.1 Carbon Dioxide -- 1.2.1.2 Lactate -- 1.2.2 Acidification Niche and Proton Generators -- 1.2.2.1 Na+/H+ Exchangers (NHEs) -- 1.2.2.2 Hydrogen Voltage-Gated Channel 1 (Hv1) -- 1.2.2.3 Carbonic Anhydrases (CAs) -- 1.3 ASICs and Neurophysiological Functions -- 1.3.1 Synaptic Development -- 1.3.2 Synaptic Plasticity -- 1.3.3 Regional Specific Functions of ASICs -- 1.3.3.1 Amygdala -- 1.3.3.2 Retina -- 1.3.3.3 Dorsal Root Ganglia (DRG) -- 1.4 Summary and Outlook -- Acknowledgements -- References -- 2. Acid-Sensing Ion Channels and Synaptic Plasticity: A Revisit -- 2.1 Introduction -- 2.2 Protons and ASICs in Synaptic Transmission -- 2.2.1 Protons Act as a Neurotransmitter in Synaptic Signaling -- 2.2.2 Modulation of Synaptic Transmission by ASICs -- 2.3 ASIC1a in Synaptic Plasticity -- 2.3.1 ASIC1a in LTP -- 2.3.1.1 Hippocampus -- 2.3.1.2 Amygdala -- 2.3.1.3 ACC -- 2.3.2 ASIC1a in LTD -- 2.3.2.1 Hippocampus -- 2.3.2.2 Insular Cortex -- 2.4 ASICs in Synaptic Remodeling -- 2.5 Summary and Future Perspectives -- Acknowledgements -- References -- 3. Trimeric Scaffold Ligand-Gated Ion Channels -- 3.1 An Introduction of Trimeric Scaffold of Ligand-Gated Ion Channels (TS-LGICs) -- 3.2 Subunit Stoichiometry and Single Subunit Architecture of P2X Receptors and ASIC Channels -- 3.3 Ion Permeation Pathway of P2X Receptors and ASIC Channels -- 3.4 Ligand Recognitions of P2X Receptors and ASIC Channels -- 3.5 Coordinated Allostery During Channel Activation of P2X Receptors and ASIC Channels.
    Keywords Electronic books
    Language English
    Size 1 Online-Ressource (xiv, 413 Seiten), Illustrationen
    Publisher CRC Press
    Publishing place Boca Raton
    Publishing country United States
    Document type Book ; Online ; E-Book
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    HBZ-ID HT021025880
    ISBN 978-1-00-040374-9 ; 9780367623951 ; 9781003109266 ; 1-00-040374-2 ; 0367623951 ; 1003109268
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Tuning neural circuits and behaviors by microglia in the adult brain.

    Zhao, Shunyi / Umpierre, Anthony D / Wu, Long-Jun

    Trends in neurosciences

    2024  Volume 47, Issue 3, Page(s) 181–194

    Abstract: Microglia are the primary immune cells of the CNS, contributing to both inflammatory damage and tissue repair in neurological disorder. In addition, emerging evidence highlights the role of homeostatic microglia in regulating neuronal activity, ... ...

    Abstract Microglia are the primary immune cells of the CNS, contributing to both inflammatory damage and tissue repair in neurological disorder. In addition, emerging evidence highlights the role of homeostatic microglia in regulating neuronal activity, interacting with synapses, tuning neural circuits, and modulating behaviors. Herein, we review how microglia sense and regulate neuronal activity through synaptic interactions, thereby directly engaging with neural networks and behaviors. We discuss current studies utilizing microglial optogenetic and chemogenetic approaches to modulate adult neural circuits. These manipulations of microglia across different CNS regions lead to diverse behavioral consequences. We propose that spatial heterogeneity of microglia-neuron interaction lays the groundwork for understanding diverse functions of microglia in neural circuits and behaviors.
    MeSH term(s) Humans ; Microglia/physiology ; Brain/physiology ; Synapses/physiology ; Neurons/physiology ; Nervous System Diseases ; Neuronal Plasticity/physiology
    Language English
    Publishing date 2024-01-19
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 282488-7
    ISSN 1878-108X ; 0378-5912 ; 0166-2236
    ISSN (online) 1878-108X
    ISSN 0378-5912 ; 0166-2236
    DOI 10.1016/j.tins.2023.12.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Integrated Feedforward and Feedback Mechanisms in Neurovascular Coupling.

    Meng, Lingzhong / Rasmussen, Mads / Meng, Deyi M / White, Fletcher A / Wu, Long-Jun

    Anesthesia and analgesia

    2024  

    Abstract: Neurovascular coupling (NVC) is the mechanism that drives the neurovascular response to neural activation, and NVC dysfunction has been implicated in various neurologic diseases. NVC is driven by (1) nonmetabolic feedforward mechanisms that are mediated ... ...

    Abstract Neurovascular coupling (NVC) is the mechanism that drives the neurovascular response to neural activation, and NVC dysfunction has been implicated in various neurologic diseases. NVC is driven by (1) nonmetabolic feedforward mechanisms that are mediated by various signaling pathways and (2) metabolic feedback mechanisms that involve metabolic factors. However, the interplay between these feedback and feedforward mechanisms remains unresolved. We propose that feedforward mechanisms normally drive a swift, neural activation-induced regional cerebral blood flow (rCBF) overshoot, which floods the tissue beds, leading to local hypocapnia and hyperoxia. The feedback mechanisms are triggered by the resultant hypocapnia (not hyperoxia), which causes cerebral vasoconstriction in the neurovascular unit that counterbalances the rCBF overshoot and returns rCBF to a level that matches the metabolic activity. If feedforward mechanisms function improperly (eg, in a disease state), the rCBF overshoot, tissue-bed flooding, and local hypocapnia fail to occur or occur on a smaller scale. Consequently, the neural activation-related increase in metabolic activity results in local hypercapnia and hypoxia, both of which drive cerebral vasodilation and increase rCBF. Thus, feedback mechanisms ensure the brain milieu's stability when feedforward mechanisms are impaired. Our proposal integrates the feedforward and feedback mechanisms underlying NVC and suggests that these 2 mechanisms work like a fail-safe system, to a certain degree. We also discussed the difference between NVC and cerebral metabolic rate-CBF coupling and the clinical implications of our proposed framework.
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80032-6
    ISSN 1526-7598 ; 0003-2999
    ISSN (online) 1526-7598
    ISSN 0003-2999
    DOI 10.1213/ANE.0000000000006891
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Chemogenetic activation of microglial Gi signaling decreases microglial surveillance and impairs neuronal synchronization.

    Zhao, Shunyi / Wang, Lingxiao / Liang, Yue / Zheng, Jiaying / Umpierre, Anthony D / Wu, Long-Jun

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Microglia actively survey the brain and dynamically interact with neurons to maintain brain homeostasis. Microglial Gi-protein coupled receptors (Gi-GPCRs) play a critical role in microglia-neuron communications. However, the impact of temporally ... ...

    Abstract Microglia actively survey the brain and dynamically interact with neurons to maintain brain homeostasis. Microglial Gi-protein coupled receptors (Gi-GPCRs) play a critical role in microglia-neuron communications. However, the impact of temporally activating microglial Gi signaling on microglial dynamics and neuronal activity in the homeostatic brain remains largely unknown. In this study, we employed Gi-based Designer Receptors Exclusively Activated by Designer Drugs (Gi-DREADD) to selectively and temporally modulate microglial Gi signaling pathway. By integrating this chemogenetic approach with
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2024.02.12.579861
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Getting a Sense of ATP in Real Time.

    Umpierre, Anthony D / Haruwaka, Koichiro / Wu, Long-Jun

    Neuroscience bulletin

    2022  Volume 38, Issue 7, Page(s) 834–836

    MeSH term(s) Adenosine Triphosphate
    Chemical Substances Adenosine Triphosphate (8L70Q75FXE)
    Language English
    Publishing date 2022-03-30
    Publishing country Singapore
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2419741-5
    ISSN 1995-8218 ; 1673-7067
    ISSN (online) 1995-8218
    ISSN 1673-7067
    DOI 10.1007/s12264-022-00846-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: How microglia sense and regulate neuronal activity.

    Umpierre, Anthony D / Wu, Long-Jun

    Glia

    2020  Volume 69, Issue 7, Page(s) 1637–1653

    Abstract: Microglia are innate immune cells of the central nervous system that sense extracellular cues. Brain injuries, inflammation, and pathology evoke dynamic structural responses in microglia, altering their morphology and motility. The dynamic motility of ... ...

    Abstract Microglia are innate immune cells of the central nervous system that sense extracellular cues. Brain injuries, inflammation, and pathology evoke dynamic structural responses in microglia, altering their morphology and motility. The dynamic motility of microglia is hypothesized to be a critical first step in sensing local alterations and engaging in pattern-specific responses. Alongside their pathological responses, microglia also sense and regulate neuronal activity. In this review, we consider the extracellular molecules, receptors, and mechanisms that allow microglia to sense neuronal activity changes under both hypoactivity and hyperactivity. We also highlight emerging in vivo evidence that microglia regulate neuronal activity, ranging from physiological to pathophysiological conditions. In addition, we discuss the emerging role of calcium signaling in microglial responses to the extracellular environment. The dynamic function of microglia in monitoring and influencing neuronal activity may be critical for brain homeostasis and circuit modification in health and disease.
    MeSH term(s) Brain ; Calcium Signaling ; Central Nervous System ; Microglia/physiology ; Neurons/physiology
    Language English
    Publishing date 2020-12-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 639414-0
    ISSN 1098-1136 ; 0894-1491
    ISSN (online) 1098-1136
    ISSN 0894-1491
    DOI 10.1002/glia.23961
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Microglia Research in the 100th Year Since Its Discovery.

    Umpierre, Anthony D / Wu, Long-Jun

    Neuroscience bulletin

    2020  Volume 36, Issue 3, Page(s) 303–306

    MeSH term(s) Animals ; Biomedical Research/history ; History, 20th Century ; History, 21st Century ; Humans ; Microglia ; Neurosciences/history
    Language English
    Publishing date 2020-02-26
    Publishing country Singapore
    Document type Historical Article ; Journal Article
    ZDB-ID 2419741-5
    ISSN 1995-8218 ; 1673-7067
    ISSN (online) 1995-8218
    ISSN 1673-7067
    DOI 10.1007/s12264-020-00477-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Chemogenetic and Optogenetic Manipulations of Microglia in Chronic Pain.

    Parusel, Sebastian / Yi, Min-Hee / Hunt, Christine L / Wu, Long-Jun

    Neuroscience bulletin

    2022  Volume 39, Issue 3, Page(s) 368–378

    Abstract: Chronic pain relief remains an unmet medical need. Current research points to a substantial contribution of glia-neuron interaction in its pathogenesis. Particularly, microglia play a crucial role in the development of chronic pain. To better understand ... ...

    Abstract Chronic pain relief remains an unmet medical need. Current research points to a substantial contribution of glia-neuron interaction in its pathogenesis. Particularly, microglia play a crucial role in the development of chronic pain. To better understand the microglial contribution to chronic pain, specific regional and temporal manipulations of microglia are necessary. Recently, two new approaches have emerged that meet these demands. Chemogenetic tools allow the expression of designer receptors exclusively activated by designer drugs (DREADDs) specifically in microglia. Similarly, optogenetic tools allow for microglial manipulation via the activation of artificially expressed, light-sensitive proteins. Chemo- and optogenetic manipulations of microglia in vivo are powerful in interrogating microglial function in chronic pain. This review summarizes these emerging tools in studying the role of microglia in chronic pain and highlights their potential applications in microglia-related neurological disorders.
    MeSH term(s) Humans ; Optogenetics ; Brain/physiology ; Microglia ; Chronic Pain/therapy ; Neurons/physiology
    Language English
    Publishing date 2022-08-17
    Publishing country Singapore
    Document type Journal Article ; Review
    ZDB-ID 2419741-5
    ISSN 1995-8218 ; 1673-7067
    ISSN (online) 1995-8218
    ISSN 1673-7067
    DOI 10.1007/s12264-022-00937-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Microglia: Lifelong patrolling immune cells of the brain.

    Eyo, Ukpong B / Wu, Long-Jun

    Progress in neurobiology

    2019  Volume 179, Page(s) 101614

    Abstract: Microglial cells are the predominant parenchymal immune cell of the brain. Recent evidence suggests that like peripheral immune cells, microglia patrol the brain in health and disease. Reviewing these data, we first examine the evidence that microglia ... ...

    Abstract Microglial cells are the predominant parenchymal immune cell of the brain. Recent evidence suggests that like peripheral immune cells, microglia patrol the brain in health and disease. Reviewing these data, we first examine the evidence that microglia invade the brain mesenchyme early in embryonic development, establish residence therein, proliferate and subsequently maintain their numbers throughout life. We, then, summarize established and novel evidence for microglial process surveillance in the healthy and injured brain. Finally, we discuss emerging evidence for microglial cell body dynamics that challenge existing assumptions of their sessile nature. We conclude that microglia are long-lived immune cells that patrol the brain through both cell body and process movements. This recognition has significant implications for neuroimmune interactions throughout the animal lifespan.
    MeSH term(s) Animals ; Brain/cytology ; Brain/growth & development ; Brain/immunology ; Brain Diseases/immunology ; Humans ; Microglia/cytology ; Microglia/physiology ; Neuroimmunomodulation/physiology
    Language English
    Publishing date 2019-05-07
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 185535-9
    ISSN 1873-5118 ; 0301-0082
    ISSN (online) 1873-5118
    ISSN 0301-0082
    DOI 10.1016/j.pneurobio.2019.04.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: CCR2

    Wang, Lingxiao / Zheng, Jiaying / Zhao, Shunyi / Wan, Yushan / Wang, Meijie / Bosco, Dale B / Kuan, Chia-Yi / Richardson, Jason R / Wu, Long-Jun

    Cell reports

    2024  Volume 43, Issue 4, Page(s) 114120

    Abstract: Border-associated macrophages (BAMs) are tissue-resident macrophages that reside at the border of the central nervous system (CNS). Since BAMs originate from yolk sac progenitors that do not persist after birth, the means by which this population of ... ...

    Abstract Border-associated macrophages (BAMs) are tissue-resident macrophages that reside at the border of the central nervous system (CNS). Since BAMs originate from yolk sac progenitors that do not persist after birth, the means by which this population of cells is maintained is not well understood. Using two-photon microscopy and multiple lineage-tracing strategies, we determine that CCR2
    MeSH term(s) Animals ; Receptors, CCR2/metabolism ; Monocytes/metabolism ; Macrophages/metabolism ; Mice ; Brain/pathology ; Brain/metabolism ; Mice, Inbred C57BL ; Homeostasis
    Chemical Substances Receptors, CCR2 ; Ccr2 protein, mouse
    Language English
    Publishing date 2024-04-15
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2024.114120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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